1. John is doing very well in Intermediate Micro economics, but hires a graduate student to spend 1 hour a week with him to do workbook problems together. John always gets every problem correct without help from the graduate student, but he insists on continuing the relationship. Is there a behavioral economic explanation of why this is rational? Explain.

2, does all games have a dominant strategy? Why or why not?

3. Why are decision trees useful for making business decisions?